The Superpesis, known as SM-sarja from 1955 to 1989, is the top professional pesäpallo league in Finland. It was created in 1990 to replace the SM-sarja which was fundamentally an amateur league. The Superpesis is directly overseen by the Finnish Pesäpallo Association. Both the men's and women's top division is called Superpesis. Comprising 13 teams in the men's league and 12 teams in the women's league, one team faces relegation to at the end of the season. Superpesis was founded in 1990; before that the top division was called SM-sarja (Finnish Championship).